5-苯基四氮唑

2,2-dimethyl-5-(phenylhydrazinylidene)-1,3-dioxane-4,6-dione

3-methyl-4-phenylhydrazono-5-isoxazolone

2-cyano-4,5-dichloropyridazin-3(2H)-one

2-cyano-4-chloro-5-methoxypyridazin-3(2H)-one